/Engine/Plugins/Online/OnlineServices/Source/OnlineServicesCommon/Public/Online/AuthCommon.h
Creating a verified auth session will generate a FVerifiedAuthSessionId. This id is a cryptographically secure random id intended to be transmitted between the established peers to refer to the remote auth session. This id is needed when the client changes how they communicate with the server. An example is connecting to a server reservation beacon to reserve a spot before traveling to the server url using a different connection.
virtual [TOnlineAsyncOpHandle](API\Plugins\OnlineServicesInterface\Online\TOnlineAsyncOpHandle)< [FAuthBeginVerifiedAuthSession](API\Plugins\OnlineServicesInterface\Online\FAuthBeginVerifiedAuthSession) > BeginVerifiedAuthSession ( [FAuthBeginVerifiedAuthSession::Params](API\Plugins\OnlineServicesInterface\Online\FAuthBeginVerifiedAuthSession\Params) && Params )